Bit-brace.



No. 801,566. PATENTED OOT.10,1905.

' A. BENNETT 6;: P. B. BLOEDEL.

BIT BRACE.

APPLICATION FILED AUG. s. 1905 wv z 31 Twain-tony fliwllty.

J/iiness as:

UNlTED i li't'ilFiNl @FFTQE.

ALEXANDER BENNETT ANl) PHILIP B. BLOEDEL, ()F BUFFALO, NEW YORK.

BIT-BRACE- Specification of Letters Patent.

Patented Oct. 10, 1905.

bit-braces, and more particularly to that type in which provision is made for effectively and conveniently boring holes in nooks and corners inaccessible to ordinary braces.

The ob ect of our invention is the productlon of a simple, convenient, and inexpensive tool of this character which will permitplacingof i the bit or other tool directly in a corner or other place inaccessible to ordinary braces and which has its actuating-crank so located with reference to the bit or tool that it may be fully turned without coming in contact with 1 end of said pm, to enter a socket 17 in the the walls forming the corner.

Other objects are to incase the gearing mechanism and utilize the casing as part of the sweep-brace and to provide an auxiliary handle at the lower outer angle of the sweep-brace.

\Vith these objects in view the invention" consists in the construction, arrangement, and combination of parts to be hereinafter described, and particularly pointed out in the appended claims.

In the drawings, Figure 1 is a side elevation of our improved bit-brace with the auxiliary handle removed and the chuck locked to the sweep-brace for ordinary use. Fig. 2 is a side elevation with the auxiliary handle applied and the chuck unlocked to revolve independent of thesweep-bracc. Fig. 3 is an enlarged elevation of one-half of the gearing-casing forming part of the sweep-brace, the gearing being shown therein. Fig. 4C is a section of the gearing-casing taken on line w 10, Fig. 3. Fig. 5 is an enlarged cross-section taken on line .1 .1, Fig. 1. Fig. 6 is an enlarged longitudinal section taken on line y 1 Fig. 1. Fig. 7 is a transverse section taken on line .2, Fig. 6.

Referring to the drawings in detail, like numorals of reference refer to like parts in the several figures.

The reference -numeral 1 designates the sweep-brace,which,ashereinshown,comprises a bar 2 of Z formation, havingat its outer end the usual swivel pressure-head 3, and a separable casing, also of 2 formation, into one end of which the bar 2 is fitted and secured by suitable rivets r or the like, which serve also to secure the two parts of the casing to gethcr. The lower inner angle 5 of the sweepbrace is enlarged to receive intermeshing bevel-gears 6, one of which is secured to the spindle T of the chuck 8, which latter may be of any common or suitable construction. The other of said gears is secured to a shaft 9, extending through the casing at a right angle to the spindle T and projecting therefrom at 10. The projecting end of the shaft may be squared to fit the squared socket ll of a crankhandle 12, which serves an an auxiliary operating-handle.

'hen the brace is used as an ordinary brace and actuated by the revolving of the sweepbrace, the latter is locked to the chuck by means of a lock-pin 1i, movable in a longitudinal bore 15 in the casing and adapted,through the efforts of a spring 16 bearing against the inner chuck. The casing is provided with a longitudinal slot 18, terminating at its inner end in a transverse extension 19. A linger-piece 20,

. extending from said lock-pin,is guided in said slot, and when said pin is elevated or disengaged from the chuck the linger-piece is moved into the extension 19 to retain the pin in its unlocked position. \Vhen the chuck is unlocked, the auxiliary handle may be applied, and on turning the same the chuck is revolved through the intervention of the shaft 9 and gears 6. This permits the sweep-brace to be held in any desired position to render the auxiliary handle convenient to operate. By arranging the auxiliary handle at the lower outer angle of the sweep-brace the latter may be positioned to extend outward from the corner and the auxiliary handle given the required space for conveniently revolving the same.

The two parts of the casing are further socured together by a screw 21, passing through the enlarged lower inner angle of the sweepbrace.

l'laving thus described our invention, what we claim is-- 1. The combination of the sweep-brace, a chuck having a gear, a shaft carried by the sweep-brace and having one end projecting beyond the lower outer angle of said brace and its other end provided with a gear in mesh with the gear of the chuck, a handle fitting the projecting end of said shaft, and means to lock the chuck to the sweep-brace to prevent independent rotation of the same when desired.

2. The combination of a sweep-brace comprising a hollow portion and a solid portion secured to said hollow portion, a chuck having a spindle revoluble in said hollow portion and a gear at the inner end of said spindle, a shaft revoluble in said hollow portion and having one end terminating within the latter and provided with a gear in mesh with the gear on the chuck-spindle and its other end projecting from said hollow portion, a handle fitting the projecting end of said shaft, and means to lock the chuck to or unlock the same from the sweep-brace.

3. The combination of a sweep-brace comprising a hollow portion separable longitudinally and a solid portion secured to one end of said hollow portion, a chuck having a spindle fitting the other end of said hollow portion and provided with a gear, a shaft within said hollow portion and projecting from the lower outer angle of the sweep-brace, a gear on said shaft within said hollow portion and in mesh with the aforesaid gear, means to revolve said shaft, and means to lock the chuck to or unlock the same from the sweep-brace.

4E. The combination of a sweep-brace comprising a hollow portion and a solid portion secured to one end of said hollow portion, a

chuck revolubly mounted in the other end of said hollow portion and having a socket formed therein, a spring-pressed bolt in said hollow portion and projecting therefrom to enter said socket, a shaft revoluble in said hollow portion and provided with a gear, means to revolve said shaft, and a gear revoluble with the chuck and in mesh with the gear on said shaft.

5. The combination of a sweep-brace comprising a hollow portion of substantially 2 formation and a solid bar also of Z formation and having one end thereof fitting into said hollow portion, a chuck revolubly secured to the other 'end of said hollow portion and having agear within the latter, a shaft in said hollow portion having a gear in mesh with the gear on the chuck, said shaft extending out through the lower outer angle of the sweepbrace, a handle fitting the projecting end of said shaft, and means to lock the chuck to or unlock the same from the sweep-brace so that it may be revolved with the latter or inclependent thereof.

In testimony whereof we have affixed our signatures in the presence of two subscribing witnesses.

ALEXANDER BENNETT. PHILIP B. BLOEDEL. Witnesses:

EMIL NEUHART, MAY F. SEWERT. 

